Replacement valve seat for internal combustion engines



H. HAGER Oct. 10, 1933.

REPLACEMENT VALVE SEAT FOR INTERNAL COMBUSTION ENGINES Filed July 14, 1932 Patented Oct.1@,1933 Y 1&25 730 1.929.7 REPLACEMENT vALvn ssn r ;.-v I C0 USTIDN.E NGIINES I I Harold, Hager, Toledo, Ohiaassignor,toTh 'To I g Steel Products p y, a corporation of 0 io fApplication July 14, 1932. Serial No."622,37l 1 v I i Claims. (Cl. 123-188) This invention relates to internal combustion groove 12, which extends entirely'aroundthe engines, but particularly'to removable seats for member. In this instance the groove is shown valves of the poppet type, and an object is to spaced a short distance below the upper surface provide novel and eiiicient means for eifectively. of the ring, although this position is not essen- 5 Se0uring a removable valve seat in place. 1 tial. Formed in the walls of the recess 11 is a Removable valve seats are found to be'derelatively shallow groove 13, which extends ensirable, particularly since they enable the seat tirely therearound, and is adapted to register to be of tougher and harder metal than the with the groove 12 when the valve seat member metal of the cylinder block, and enable the en- D is in position, as shown particularly in Fig- I gine to operate over a considerable period of ure 5. V time without the trouble, annoyance and ex- A diagonal groove 14: extends from the upper pense of grinding or re-seating the valves. Diisurface of the valve insert D'to the groove 12, ficulty has been experienced in securing the and this groove is of sufficient size to admit a removable seat member in place in the cylinder wire 15. In practice the valve seat member D 15 bl ck, and, although means and devices, such as is inserted within the recess or cavity 11, and 7,, screw threads and dowel pins, have been emthereafter the wire 15, which may be of steel, ployed for this purpose, they have been found or other suitable material, is'intrcduced at one to be objectionable either because of the addiend into the diagonal groove l4,'and thereafter tional expense involved, or their inability to is forced in any Su tab n r. as With P 0 keep the seat securely in position, or for other to completely fill the complementary grooves reasons. 12 13. The wire 15"should be of such size In accordance with this invention, a simple as substantially to fill the grooves 12 and 13 and emcient device is provided by which a seat in order securely to retain the member D in lace in the cylinder position. .After the wire has completely filled member is inserted in p block, and thereafter in an extremely simple the lcg ste ing oove 12 and 13, the 0113661 end at 16 in Figure 4, or may and efficient manner a wire is forced. into place 191 861 6, a S ow which securely retains the seat member in place be welded, cemented, or otherwise suitably sethroughout. I v 1 cured in the diagonal groove 14 to insure that Forrpurposes of illustration, but not of'limiit will remain in the desired position. In this tation, an embodiment of the invention is shown' manner it is manifes on the accompanying drawing. in which: ber D may be readily and conveniently securedv Figure l is a sectional elevation of a part of in posit o in the Cylinder block, y b an engine block showing the valve seat memremoved for replacement with a minimum of ber in position; trouble and effort.

' Figure 2 is a top view substantially on the It isto be understood that numerous changes line 2-2 of Figure 1 showing some of the parts in details of construction, arrangement and 0 0- broken away; V eration may, be effected without departing from Figure 3 is a perspective view of the seat the spirit of the invention, especially as demember; finediin the appended claims.

Figure 4 is an enlarged top plan view with a portion thereof broken away of the valve seat Letters Patent isz. member in place; and, l. A new, article of manufacture, a valveiseat Figure 5 is an enlarged fragmentary sectional comprising an annulus formed with a periphview in vertical elevation of the seat member in 32.1 groove, and a Wire Said gIOOVB having a -place. I portion projecting therebeyond, there being a The illustrated embodiment of the invention diagonal groove leading from a face of said an- A having. a piston nulus to said groove to enable insertion of said wire when said annulus is in operative position.

formed with a recess, a

comprises a cylinder block B and poppet valve C. A removable or replacement valve seat D comprises an annulus or ring 2. In a valve housing provided with a beveled face 10 to receive the valve seatmember cl poppet valve C. The valve seat member D is both said valve seat member and said valve disposed within a recess 11 formed in the cylinhousing being formed with complementary der block in the desired position substantially grooves, said valve seat member having a groove r surface of the leading from the outside to said complementary r as shown. Formed in the oute valve seat member D is a relatively shallow grooves, and a wire inserted through said last t that the valve seat mem- 85 What I claim as new and desire to secure by w osely fitting said recess,

a-svalve seat member .closely fittinglsaid recess,

recess having a groove opening into said recess, a

valve seats member disposed Within isaid rrecessp said valve-seat member-being of a -size to snugly into said recess and when operative1y.

disposed therein having its side face engaging the side Wall of said recess at both sides of the both said valve seat member and said valve housing being formed with complementary grooves, said valve seat member having a diagonal groove extending from the upper side thereofto said complementary grooves, and a Wire: adapteda to ;be.z'inserteditliroughissaid diagonal groove" and' forcedthroughwsaid -complementary grooves for retaining the valve seat within said recess. a V

5. jThe combination with a recessed valve groove in said side wall, said. vvalveseattrnernloena por "and-1a pgroovlefacing said port, of a rehaving a complementary groove on thaaexterior 1 side thereof in alignment with said first groove and a groove extending fr'om tliaflipper side placeablelvalve seat formed with a complementary groove and disposed in said recess, and

meansinse-rted- -from the outside after said seat joining said complementary"groove;'=-and' a wire 'is in place and substantially filling said comsubstantially filling said complementary grooves having one end portion disposed;inssaidslastgroove.

4.7 In a valve housing formed with a -recess;-

plementary grooves fo'r retaining said seat in :place; said iseatmhavi-ng an opening afiording access to said retaining means when isin'place V HAROLD HAGER.

the latter 

